Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

No definition available.

Name:	hdsup_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	hdsup_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage limit on the amount that may be redeemed.

+ References

No definition available.

+ Details

Name:	hdsup_DebtRedemptionPercentageOfPrincipalAmountPayment
Namespace Prefix:	hdsup_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage threshold of outstanding debt which must remain outstanding after each redemption related to a qualified public offering redemption.

+ References

No definition available.

+ Details

Name:	hdsup_RequiredPercentageOfAggregatePrincipalAmountOfDebtThatRemainsOutstandingImmediatelyAfterQualifiedPublicOfferingRedemptionMinimum
Namespace Prefix:	hdsup_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage threshold of outstanding debt which must remain outstanding after each redemption on the amount that may be redeemed.

+ References

No definition available.

+ Details

Name:	hdsup_RequiredPercentageOfAggregatePrincipalAmountOfDebtThatRemainsOutstandingImmediatelyAfterRedemptionMinimum
Namespace Prefix:	hdsup_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

DEBT (Details 13) (10.5% Senior Subordinated Notes due 2021, USD $) In Millions, unless otherwise specified	Feb. 03, 2013	Jan. 16, 2013	Feb. 03, 2013 Prior to January 15, 2016	Feb. 03, 2013 2016	Feb. 03, 2013 2017	Feb. 03, 2013 2018	Feb. 03, 2013 2019 and thereafter	Feb. 03, 2013 After July2013 and before July 2014	Feb. 03, 2013 Qualified public equity offerings 2016	Feb. 03, 2013 Qualified public equity offerings After July2013 and before July 2014	Feb. 03, 2013 Qualified public equity offerings Prior to January 2014	Feb. 03, 2013 Qualified public equity offerings Between January and July 2014	Jan. 02, 2013 Certain equity offerings	Feb. 03, 2013 Certain equity offerings Prior to January 15, 2016	Feb. 03, 2013 Certain equity offerings After July2013 and before July 2014
Components of long-term debt
Note issued, amount		$ 950
Note issued, interest rate	10.50%	10.50%
Optional prepayment price percentage			100.00%	107.875%	105.25%	102.625%	100.00%				103.00%	102.00%		110.50%
Percentage limit on amount that can be redeemed								100.00%		100.00%				35.00%
Threshold percentage for debt that must remain if less than 100% of the notes are redeemed in a qualified public offering									35.00%						33.33%
Threshold percentage for debt that must remain after each redemption			50.00%										35.00%